Features

Wiring

Universal to oxygen sensor's harness (wire-cut required)

Working Theory

A popular alteration amongst vehicle owners is to decat the exhaust system or install an aftermarket header, to free up the performance capability of the vehicle. Nowadays, exhaust gas is controlled through two to up to four lambda sensors, at least one front sensor that controls the fuel management system, and at least one aftercat that monitors converter function. When the aftermarket headers are installed or catalytic converters are removed on your Volvo 140, the result is a catalyst efficiency check engine light failure code alerting the ECM that the catalytic converter is missing or not working properly. The modified engine now produces a larger amount of exhaust gases than allowed. Obviously you do not want to drive your car with a constant engine management warning light, in addition your Volvo 140 will not pass emissions in many US states or countries with an illuminated check engine light. The ultimate solution is to install an O2 sensor simulator wired up to the aftercat exhaust air fuel sensor’s harness in order to simulate a properly functioning exhaust air fuel sensor. EZ CEL Fix oxygen sensor eliminator outputs the Electronic Control Unit with mimicked, fluctuating voltage signal and tricks the Power Control Module into thinking the emissions are normal. Your Volvo 140 oxygen sensor simulator will allow you to drive your vehicle without catalyst converter and still keep the MIL light off.

Notes

In case of a single oxygen sensor or dual pipe exhaust system fitted with two lambda probes only, the oxygen sensor simulator taps to these ports.

Headers require both up- and downstream O2 sensor simulation.

frontoxygen sensor has to work flawlessly. Slow signal of upstream o2 sensor may prevent the aftercat oxygen sensor emulator from working.

Oxygen sensor simulator is a racing part. It is not CARB approved. Please be aware of the bylaws and regulations, O2 sensor eliminator is not street legal in several US states and countries.

Are you sick and tired of the marketing hypes for non-working $5 oxygen sensor simulators, smart bypasses, oxygen sensor extenders and those o2 delete tools? Here you’ve stumbled across the right solution at the right place. No doubts, this oxygen sensor emulator will fit your Volvo 140 and rid you of the exhaust gas oxygen sensor related check engine codes. Although we cannot rectify your problems free, the easy do-it-yourself setup and the warranted results are worth the money.

Don’t want to waste your time installing oxygen sensor bypass gadgets that will never rid you of the warning light for good? Choose the reliable solution that will definitely sort out your engine management warning light issue right away. EZ CEL Fix oxygen sensor simulator is made to prevent the warning light from illuminating and to prevent an Power Control Module code from tripping when the catalyst is gutted or a header installed. The Magnum Volvo 140 Oxygen Sensor Simulator is carefully calibrated to mimic the signal from the exhaust air fuel sensor to keep it in the range the Engine computer is expecting to see.

Packing List

1 x EZ CEL Fix Oxygen Sensor Simulator

4 x Bullet Connectors

4 x Heat Shrink Tubing

1 x Installation Instructions

How can I figure out my sensor is a zirconia type?

Zirconia type oxygen sensors have 1 to 4 wires. 1 to 3 wires indicate a zirconia narrowband O2 sensor definitely. In the case of 4 wires, two of the wires have to be identical for heater, whilst the rest two wires have to be different for signal sender and signal ground. Always reference the sensor-side colors of the wires coming out off of sensor head. ECU-side colors may convert through the plugs.

How to find out if it's a narrowband or wideband?

Typically 1 to 4-wire sensors are narrowband. There are exceptions though. A narrowband oxygen sensor's signal is constantly fluctuating in a range of 0 to 1.0 Volts depending on oxygen content in the exhaust gas. Any oxygen sensor that produces higher voltages, is determined to be a wideband oxygen sensor. Keep in mind, although a 4-wire O2 sensor can be wideband too, in common sense only 5 or 6-wire sensors are called wideband. If your sensor has more than 4-wires, oxygen sensor is not applicable.

Which sensor has to be tricked?

In general: the downstream but upstream has to work flawless in full range. If you intend to buy a simulator hence decatting, header or modified exhaust, the downstream sensor has to be fooled by all means. See position diagram .

Headers or precat gutting requires upstream simulator as well.

Questions and answers

- Can I be positive this chip fixes my CEL issue for good and all? - Yes, Magnum oxygen sensor simulator produces a random fluctuation having assigned with suitable cycle and wave accepted by the ECU. Rest assured, all oxygen sensor signal related codes will be gone. Upstream sensor if any has to be in good condition though. Please see prerequisites pertaining to sensor type and quantity of simulators. - What if I simply eliminate factory oxygen sensor? - Oxygen sensor removal will not remedy CEL issue. Suitable fluctuating signal is fundamental to be delivered by the ECU. Zero volt signal triggers another trouble code. - Why is it so important to cancel the trouble code? - While check engine light is on, ECU restricts the engine performance and vehicle is running in safe / limp mode. MPG is also affected negatively. - Do I need to buy a heated simulator or I can stick with this cheaper EZ CEL Fix? - If you can use the heater of the factory oxygen sensor(s), you may wire up this #795 EZ CEL Fix. Heated simulator #661 allows you to remove or eliminate the stock oxygen sensor completely. - What about 'oxygen sensor bungs' 'mini cats' or any other piggybacks are also supposed to sort our FI problems? - The market is teeming with physical gadgets aiming to fix CEL issues. Vast majority of them doesn't take effect on OBDII vehicles made after 1996. They often don't work even on early fuel injected cars. If your vehicle had been manufactured after 1996 or you drive an early model controlled by a sensitive ECU, these gadgets won't help. The definite solution is a circuit conditions realistic signal, as if a working oxygen sensor would be screwed in the factory exhaust. - Can I rally my two harnesses into one simulator? - No, simulators can't be spliced. Get rid of oxygen sensor related CEL issue yet today. Flat catalytic converter gutting or plain-tube decats will spoil low- and mid-end torque hence ruined engine flush due to inadequate exhaust back pressure and higher block temperature thus valves, cylinder head and other engine parts are constantly being exposed to undesired extra heat. True enough, maximum horsepower increases it still pertains to a higher RPM which perishes dynamic kick out acceleration throughout the RPM range, mostly on automatic vehicles, therefore to save money on fuel and enhance low and mid-end torque, highly recommended to install a reliable Decat . Plain decatting is judged unprofessional among serious tuners and enthusiasts. Injected gasoline engines controlled by Electronic Control Unit (ECU) or alias Electronic Control Management (ECM) have oxygen sensor or O2 sensors to measure the amount of oxygen contained in the exhaust gas. These sensors deliver the ECU fluctuating voltage according to the actual oxygen consistence of air fuel mixture. When exhaust system is decatted or heavily modified, ECU is reading an oxygen sensor signal being inconsistent with other engine sensor's signal, or signal is out of the range yet accepted, an O2 sensor-related trouble code will be triggered ending up in check engine light issue. CEL or MIL or FI errors abbreviate these failures. While check engine light is on, ECU runs in so called lean limp mode. Safe mode restricts both the fuel trim and the ignition timing and develops an overall limitation on performance, until problem diagnosed and resolved definitely. Therefore if you modified your engine with any upgrade causes the oxygen sensor deliver lower signal than normally, you need to wire up an Oxygen Sensor Simulator. Although your ECU will be tweaked, mixture's air fuel ratio still will remain incorrect hence decatting or any other exhaust modification. Simulators help you remedy CEL problems but will not achieve that basic remapping is crucial when decatting or modifying an exhaust. You might be interested in our further performance chips in order to boost engine horsepower, improve fuel efficiency or both at the same time. EVO-Tech and Dyno-Boost and Smart-Tune-X fuel controllers remaps the ECU in order to reprogram the engine management to the performance parts preinstalled on the vehicle. They boost the engine horsepower as well as improve fuel mileage. Magnum Tuning has been dealing with manufacture of performance upgrades since 1994. Our experience warrants peak performance, reliability perfect style. Simulators are made in Europe covered by 10-year warranty.

Claims stated in this description are warranted by Magnum Tuning.

Oxygen Sensor Simulators are not CARB Approved, and are never to be used on Pollution Controlled Vehicles or on Public Highways in those states and countries simulators are prohibited. Customer agrees and takes responsibility NOT to install the Oxygen Sensor Simulator in order to pass federal or other emission test or to treat check engine light also referred to as CEL/MIL issues.

very easy to install and operate

after MIL gone could definitely feel more power, the air to fuel ratio is better, very easy to install and operate. The technical support was one of the best I have ever had! I had to buy 4. No qualms I will recommend this company to everyone.

works as described

My initial fears of spoofing engine computer have been increasingly decreasing with the help of Magnum Tech Team. They are prompt and able to address my concerns fast. I am thankful to Kev tech support department for his superb assistance. Everything works as described.

PO420/PO430 code never came back

After I installed these in 500 SLC and reset the catalyst effficiency codes --- check engine light w/PO420/PO430 code never came back on and I passed emissions. Immaculate support when you need and the product is exactly as described.

de-catted truck is craving for o2 bypass

When i spotted on eZ CELL to my R 3500 and consulted part info, I got the grasp of what I needed to purchase. No qualms when your de-catted truck is craving for o2 bypass these are must. The only minus they don 't make dual sims.

will walk you through everything

I stumbled across this web site after searching high and low for a piggyback for my CEL to be cured. I am a broke amateur I still coped with the set up by myself. Tech support was a wealth of help. I recommend this o2 bypass to people who are having similar screwy sensor codes issues even after replacing all the stinking sensors! Easy to install the simulator will walk you through everything, codes are tripped no more and trust me I felt the firmer shifts better take off hence normal ECM mode.

Unleash the max performance potential of your vehicle and say goodbye to lean factory fuel programming with this adjustable fuel controller. Your performance chip tunes your engine with advanced fuel programming to harness your engine’s full power. The fuel tuner will add 15 % extra horsepower to your power plant without compromise of engine durability or reliability. Chip tricks signals being read by the ECU, resulting an adjustment to fuel curve, which is what causes increase in power, acceleration and throttle response across the RPM range.

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With our ECU controller, your fuel maps receive an extensive recalibration that delivers horsepower and torque down to the wheels. The performance chip works to optimize the fuel trim for ultimate power and better fuel mileage. Smart Fuel Tuner fools engine sensor signals being read by the ECU, resulting in an adjustment to the fuel curve which causes the increase in power as well as improves acceleration and smoothes out throttle response through the RPM range.